Tractor grill



FIG. 1 is a front view of a tractor grill, showing my new design;

FIG. 2 is an enlarged top perspective view thereof;

FIG. 3 is a further enlarged bottom perspective view thereof; and,

FIG. 4 is a reduced right side perspective view thereof.

The broken line showing of the front-loader tractor and the hood are for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a tractor grill, as shown and described. 